alpha_test_quad(struct quad_stage *qs, struct quad_header *quad)
{
struct softpipe_context *softpipe = qs->softpipe;
- GLuint j;
const GLfloat ref = softpipe->alpha_test.ref;
+ GLuint passMask = 0x0, j;
switch (softpipe->alpha_test.func) {
case PIPE_FUNC_NEVER:
break;
case PIPE_FUNC_LESS:
/*
- * If quad->mask were an array [4] we could do this SIMD-style:
- * quad->mask &= (quad->outputs.color[3] <= vec4(ref));
+ * If mask were an array [4] we could do this SIMD-style:
+ * passMask = (quad->outputs.color[3] <= vec4(ref));
*/
for (j = 0; j < QUAD_SIZE; j++) {
- if (quad->mask & (1 << j)) {
- if (quad->outputs.color[3][j] >= ref) {
- /* fail */
- quad->mask &= (1 << j);
- }
+ if (quad->outputs.color[3][j] < ref) {
+ passMask |= (1 << j);
}
}
break;
case PIPE_FUNC_EQUAL:
for (j = 0; j < QUAD_SIZE; j++) {
- if (quad->mask & (1 << j)) {
- if (quad->outputs.color[3][j] != ref) {
- /* fail */
- quad->mask &= (1 << j);
- }
+ if (quad->outputs.color[3][j] == ref) {
+ passMask |= (1 << j);
}
}
break;
case PIPE_FUNC_LEQUAL:
for (j = 0; j < QUAD_SIZE; j++) {
- if (quad->mask & (1 << j)) {
- if (quad->outputs.color[3][j] > ref) {
- /* fail */
- quad->mask &= (1 << j);
- }
+ if (quad->outputs.color[3][j] <= ref) {
+ passMask |= (1 << j);
}
}
break;
- /* XXX fill in remaining cases */
+ case PIPE_FUNC_GREATER:
+ for (j = 0; j < QUAD_SIZE; j++) {
+ if (quad->outputs.color[3][j] > ref) {
+ passMask |= (1 << j);
+ }
+ }
+ break;
+ case PIPE_FUNC_NOTEQUAL:
+ for (j = 0; j < QUAD_SIZE; j++) {
+ if (quad->outputs.color[3][j] != ref) {
+ passMask |= (1 << j);
+ }
+ }
+ break;
+ case PIPE_FUNC_GEQUAL:
+ for (j = 0; j < QUAD_SIZE; j++) {
+ if (quad->outputs.color[3][j] >= ref) {
+ passMask |= (1 << j);
+ }
+ }
+ break;
+ case PIPE_FUNC_ALWAYS:
+ passMask = MASK_ALL;
+ break;
default:
abort();
}
- qs->next->run(qs->next, quad);
+ quad->mask &= passMask;
+
+ if (quad->mask)
+ qs->next->run(qs->next, quad);
}
switch (softpipe->depth_test.func) {
case PIPE_FUNC_NEVER:
+ /* zmask = 0 */
break;
case PIPE_FUNC_LESS:
/* Note this is pretty much a single sse or cell instruction.
zmask |= (1 << j);
}
break;
- /* XXX fill in remaining cases */
+ case PIPE_FUNC_GREATER:
+ for (j = 0; j < QUAD_SIZE; j++) {
+ if (qzzzz[j] > bzzzz[j])
+ zmask |= (1 << j);
+ }
+ break;
+ case PIPE_FUNC_NOTEQUAL:
+ for (j = 0; j < QUAD_SIZE; j++) {
+ if (qzzzz[j] != bzzzz[j])
+ zmask |= (1 << j);
+ }
+ break;
+ case PIPE_FUNC_GEQUAL:
+ for (j = 0; j < QUAD_SIZE; j++) {
+ if (qzzzz[j] >= bzzzz[j])
+ zmask |= (1 << j);
+ }
+ break;
+ case PIPE_FUNC_ALWAYS:
+ zmask = MASK_ALL;
+ break;
default:
abort();
}
sps->write_quad_z(sps, quad->x0, quad->y0, bzzzz);
}
- qs->next->run(qs->next, quad);
+ if (quad->mask)
+ qs->next->run(qs->next, quad);
}